Uber has officially surpassed the taxi as the ground transportation of choice for business travelers, at least according to new data from expense management company Certify.

According to Certify's review of 8 million travel receipts expensed between April and June 2015, Uber made up 55% of all ground transportation expenses. Meanwhile, taxi rides accounted for 43%. That's a significant shift in market power. As BuzzFeed News previously reported, in March taxis accounted for 52% of all ground transportation expenses submitted to Certify, while Uber accounted for 47%.

Uber's growth appears to be coming not just at the expense of the taxi industry, but of the rental car industry as well. According to Certify's research, Uber is also becoming a favored business travel alternative to the rental car. Between the second quarter of 2014 and the second quarter of 2015, Uber's share of ground transportation expenses rose to 31% from 8%. Meanwhile, the car rental industry's declined to 45% from 55%.

Certify

And how does Lyft fare in Certify's new data? It accounted for only 1% of travel expenses, though its services were on average cheaper than those of its rivals. Lyft also saw incredible gains in big cities like Chicago and San Francisco and was rated higher than Uber, car rentals, and taxis in terms of quality of service.

Certify

Certify

Victory in the business travel ground transportation market does not imply ride-hail market supremacy. That said, it is a good indicator of who currently has the upper hand in a crucial sector in which Uber and Lyft both spent a lot of time and money promoting their services like "Lyft for Work" and "Uber for Business."

Johana Bhuiyan is a tech reporter for BuzzFeed News and is based in New York. Bhuiyan reports on the sharing economy with a focus on ridesharing companies.